Angle-controllable interface evaporator for water and electricity co-production and preparation method of angle-controllable interface evaporator

Abstract

The invention relates to an angle-controllable interface evaporator for water and electricity co-production and a preparation method of the angle-controllable interface evaporator. According to the evaporator, the surfaces of conductive wires are coated with ramie yarns, surface modification is conducted through sodium alginate and polyaniline, and meanwhile polystyrene foam is adopted as a floating heat insulation layer. The copper wires and constantan wires of the core layer endow the yarn with rigidity, so that the bending angle can be controlled. The photo-thermal conversion performance of polyaniline is combined with the specific structural design, and the efficient light collecting effect and double-sided evaporation are achieved, so that the water evaporation performance is improved. Due to the good hydrophilicity of the ramie yarn wrapped with the sodium alginate gel film, the efficiency of continuous water supply and rapid crystal salt dissolving is guaranteed, and the heat loss is reduced through the polystyrene foam layer. The lower end of the evaporator is immersed in water to maintain low temperature, the upper end of the evaporator is exposed to the sun to raise the temperature, and the prepared evaporator can generate fresh water and electric energy by means of environment-friendly solar energy. The selected polyaniline preparation process is mature, sodium alginate is easy to obtain and environment-friendly, and an effective and environment-friendly solution is provided for obtaining fresh water and energy.

Description

Technical Field

[0001] The invention relates to an angle-controllable interface evaporator for water and power cogeneration and a preparation method thereof, and specifically belongs to the technical field of water and power cogeneration. Background Art

[0002] Globally, the shortage of water resources and energy is becoming increasingly serious. Although most of the earth's surface is covered by water, the freshwater resources available for direct human use are extremely limited, accounting for only 2.53% of the total global water volume, and the part that humans can directly obtain is even more negligible, only about 0.36%. In order to solve this problem, scientists have developed a variety of seawater desalination technologies, such as reverse osmosis, multi-effect flash evaporation and membrane distillation, but these technologies generally face problems such as high energy consumption, harsh operating conditions and high costs. At the same time, with the continuous growth of global energy demand, traditional fossil energy is facing the threat of depletion, and the damage to the environment has also attracted widespread attention. Therefore, it has become particularly urgent to develop new and sustainable energy technologies. As a clean, abundant and sustainable energy source, solar energy is particularly important in the application of seawater desalination and freshwater extraction. The solar-driven interfacial evaporation system achieves efficient seawater desalination and freshwater extraction by setting an evaporator at the water-air interface, effectively utilizing solar energy, reducing environmental impact and improving the availability of freshwater resources. At the same time, the thermocouple temperature difference power generation technology uses the Seebeck principle to directly convert thermal energy into electrical energy. It has the advantages of simple structure, no noise, no wear, high reliability, maintenance-free, and no pollution, providing an effective solution for small-scale energy collection and conversion. The development of this technology not only helps to improve energy utilization efficiency and reduce damage to the environment, but also provides a reliable energy solution for remote areas and mobile devices.

[0003] In this context, the cogeneration technology of water and power came into being. It combines the dual functions of fresh water acquisition and energy production, aiming to solve water and energy problems at the same time through an integrated system. This technology can not only provide clean fresh water resources, but also convert the heat energy generated in the desalination process into electrical energy through thermocouple temperature difference power generation and other methods, so as to achieve efficient use of energy. The development of cogeneration technology of water and power provides an innovative solution to the global water and energy shortage problems, and has important practical application value and broad development prospects.

[0004] For example, Chinese patent CN 118084118 B discloses "an interface evaporation water and electricity cogeneration device", which includes a light absorption layer, a heat insulation water transfer layer, a piezoelectric layer, a separation layer and a cathode arranged in sequence from top to bottom. By designing the light absorption layer and the piezoelectric layer, while realizing the graded utilization of solar energy, wave energy is introduced into the interface evaporation system, and the photothermal conversion, photoelectric conversion and piezoelectric conversion are integrated in an interface evaporator, which utilizes the energy that cannot be utilized by the traditional interface evaporation system, broadens the energy source of the system, and realizes the cogeneration of fresh water and electricity. For example, Chinese patent CN 118666345A discloses "an efficient condensation tubular solar water and electricity cogeneration device", which is mainly composed of a solar evaporation mechanism, a bearing mechanism and a water evaporation condensation collection mechanism. The three-dimensional tubular structure replaces the traditional two-dimensional plane structure as the evaporation interface, which improves the steam condensation collection rate and evaporation efficiency of the device.

[0005] Therefore, copper wire and constantan wire are used as the core layer materials, ramie yarn is wrapped on the outer layer, and the surface is modified with sodium alginate and polyaniline, and polystyrene foam is selected as the thermal insulation floating layer. Among them, the core layer copper wire and constantan wire give the yarn rigidity and can control the angle of the yarn. The synergistic effect of polyaniline and the shape structure at a specific angle maximizes light absorption. The specific angle shape allows the evaporator to perform double-sided evaporation, which can effectively increase the water evaporation rate. At the same time, the ramie yarn with good hydrophilicity can continuously supply water and quickly dissolve the crystallized salt, and the polystyrene foam can avoid heat loss on the surface of the photothermal layer and make the evaporator float on the water. In the process of seawater desalination, the lower end of the evaporator is placed in water to maintain low temperature, and the upper end is exposed to sunlight to increase the temperature. The temperature difference between the upper and lower ends generates voltage, which can generate fresh water and electricity relying on green and environmentally friendly solar energy. Summary of the invention

[0006] The purpose of the present invention is to provide an angle-controlled interface evaporator for water and power cogeneration, wherein ramie yarn is wrapped around the surface of a two-component conductive wire by a coating method, and sodium alginate gel and polyaniline are loaded on the surface of the ramie yarn by a coating and chemical oxidation polymerization method. The evaporator is placed in sunlight to conduct a water and power cogeneration experiment, the upper end is heated under light and stable and efficient water evaporation is achieved, and the lower end is kept at a low temperature in water, thereby generating a temperature difference at the two ends, and relying on the Seebeck effect to generate a temperature difference voltage, efficient water and power cogeneration is achieved.

[0007] The technical solution of the present invention is:

[0008] Step 1: prepare a two-component conductive wire, twist two copper wires with the two ends of a constantan wire respectively, evenly apply a layer of epoxy ester anti-corrosion insulating paint on the entire constantan wire and the twisted parts of the two, and put them in an oven for drying and curing.

[0009] Step 2: Prepare a sodium alginate aqueous solution by adding a certain amount of sodium alginate powder into deionized water and fully stirring the mixture in a water bath to obtain a sodium alginate aqueous solution.

[0010] Step 3: Prepare a calcium chloride solution by adding a certain amount of calcium chloride particles into deionized water and stirring evenly at room temperature to obtain a calcium chloride solution.

[0011] Step 4: prepare a polymerization mixed solution, using a certain concentration of hydrochloric acid aqueous solution as a solvent, adding a certain mass of aniline and ammonium persulfate thereinto, and stirring evenly to obtain a polymerization mixed solution.

[0012] Step 5: Prepare an angle-controlled interface evaporator for water and power cogeneration. First, coat the surface of the above-mentioned two-component conductive wire with ramie yarn. Then immerse the yarn in an aqueous sodium alginate solution for ultrasonic treatment, and then immerse it in a calcium chloride solution. After taking it out, dry the yarn to form a layer of sodium alginate hydrogel film on its surface. Then immerse the yarn in a polymerization mixed solution for low-temperature polymerization. After the polymerization is completed, wash and dry it. The surface of the yarn is loaded with polyaniline particles to obtain an angle-controlled interface evaporator for water and power cogeneration.

[0013] Furthermore, in step 1, the diameters of the copper wire and the constantan wire are both 0.1-0.5 mm, the oven temperature is 60-150° C., and the drying time is 0.5-3 h.

[0014] Furthermore, in step 2, the mass concentration of sodium alginate is 0.25%-2%, and the water bath temperature is 60-100°C.

[0015] Furthermore, the mass concentration of calcium chloride in step three is 1-15%.

[0016] Furthermore, the molar concentration of the solvent hydrochloric acid aqueous solution in step 4 is 1 mol / L, the molar concentrations of aniline and ammonium persulfate are 0.1-0.5 mol / L, and the molar ratio of the two is 1:1.

[0017] Furthermore, in step five, the diameter of the ramie yarn is 0.6-1.5 mm, the yarn is immersed in the sodium alginate aqueous solution for ultrasonic treatment for 0.5-4 h, the yarn is immersed in the calcium chloride solution for 6-12 h, and the polymerization temperature of the yarn in the mixed polymerization solution is -10-0°C for 6-12 h.

[0018] The advantages of the present invention are:

[0019] The copper wire and constantan wire used are common and easy to obtain, and the sodium alginate and polyaniline used have mature preparation processes and low prices. The experiment adopts the coating technology and the immersion process method, the operation process is simple, and the experiment is easy to reproduce.

[0020] The present invention wraps the ramie yarn with excellent hydrophilicity on the copper wire and constantan wire, and fixes the yarn through the polystyrene foam, and finally bends the yarn to a certain angle. The ramie yarn is modified with polyaniline material with good photothermal performance and thermal conductivity. Under the irradiation of 1 standard sunlight intensity, the surface of the evaporator can quickly heat up to 63°C. The yarn at a specific angle can be evaporated on both sides, and can reach 1.77kg under the irradiation of 1 sunlight intensity. -2 h -1 More importantly, the evaporator with 48 yarns in series can generate a voltage of 17.45mV, achieving sustainable water and power cogeneration using renewable solar energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor.

[0022] Figure 1 A schematic diagram of a single yarn of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1, wherein the core layer of the yarn is a two-component conductive wire of copper wire and constantan wire, and the outer layer is ramie yarn;

[0023] Figure 2 A physical picture of a single yarn of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1;

[0024] Figure 3 A schematic diagram of an angle-controllable interface evaporator for water and power cogeneration prepared in Example 1;

[0025] Figure 4 A diagram of multiple yarns in series for an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1;

[0026] Figure 5 This is a surface SEM image of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1;

[0027] Figure 6 The temperature variation curve of the surface of an angle-controlled interface evaporator for water and power cogeneration with different yarn numbers prepared in Example 1 under the illumination intensity of 1 sun;

[0028] Figure 7 An angle-controlled interface evaporator for water and power cogeneration prepared in Example 1, Comparative Example 1 and Comparative Example 2 at 1000 W / m 2 Temperature variation curve under light intensity;

[0029] Figure 8 An angle-controlled interface evaporator for water and power cogeneration prepared in Example 1, Comparative Example 1 and Comparative Example 2 at 1000 W / m 2 Water evaporation performance under light intensity;

[0030] Fig. 9 This is a physical picture of surface salt crystallization of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1 under standard light intensity irradiation for 10 hours in a sodium chloride solution with a mass concentration of 3.5%, that is, the salt resistance of the evaporator.

[0031] Fig.10 This is a thermal conductivity diagram of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1;

[0032] Fig.11 This is a test diagram of water and power cogeneration of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the technical solutions of the present invention are further described below in conjunction with the accompanying drawings and embodiments. However, the present invention is not limited to the embodiments listed, and should also include any other known changes within the scope of the rights claimed by the present invention.

[0034] First, the "embodiment 1" referred to herein refers to a specific feature, structure or characteristic that can be included in at least one implementation of the present invention. Secondly, the present invention is described in detail using a structural schematic diagram, etc. When describing the embodiment of the present invention in detail, for the sake of convenience, the schematic diagram will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, a three-dimensional space of length, width and depth should be included.

[0035] In addition, the abbreviations mentioned in the present invention are all fixed abbreviations in the field, and some of the abbreviations are explained as follows: PANI: polyaniline; SA: sodium alginate; RY: ramie yarn; SEM: scanning electron microscope image

[0036] Embodiment 1

[0037] This embodiment prepares an angle-controllable (45°) interface evaporator for water and power cogeneration according to the following steps;

[0038] Step 1: Preparation of two-component conductive wire

[0039] Two copper wires are twisted with the two ends of a constantan wire respectively, and a layer of epoxy ester anti-corrosion insulating paint is evenly applied on the surface.

[0040] Step 2: Prepare sodium alginate aqueous solution

[0041] A certain amount of sodium alginate powder was added to deionized water and fully stirred in a water bath at 80° C. to prepare 100 mL of a sodium alginate aqueous solution with a mass concentration of 0.5%.

[0042] Step 3: Prepare calcium chloride solution

[0043] A certain amount of calcium chloride particles was added to deionized water and stirred evenly at room temperature to prepare 100 mL of a 2% calcium chloride solution.

[0044] Step 4: Preparation of polymer mixed solution

[0045] A certain amount of aniline and ammonium persulfate were successively added into a 1 mol / L hydrochloric acid aqueous solution as a solvent, and stirred evenly to obtain a polymerization mixed solution of 0.2 mol / L aniline and 0.2 mol / L ammonium persulfate.

[0046] Step 5: Prepare an angle-controllable (45°) interface evaporator for water and power cogeneration

[0047] First, the surface of the two-component conductive wire of copper wire and constantan wire is coated with ramie yarn, and then the yarn is immersed in the above-mentioned sodium alginate aqueous solution for ultrasonic treatment for 1 hour, and then immersed in the calcium chloride solution for 6 hours. After taking it out, the yarn is dried at room temperature to form a layer of sodium alginate hydrogel film on its surface. Secondly, the yarn is immersed in the polymerization mixed solution for low temperature (-5°C) polymerization for 10 hours. After the polymerization is completed, it is washed with deionized water and dried in an oven at 80°C. Polyaniline particles are loaded on the surface of the yarn. Finally, multiple yarns are passed through polystyrene foam to fix them, and the yarns are bent to 45° (schematic diagram) Figure 3 ∠A≈45°), and an angle-controllable (45°) interface evaporator for water and power cogeneration is obtained.

[0048] Comparative Example 1

[0049] This embodiment prepares an angle-controllable (0°) interface evaporator for water and power cogeneration according to the following steps;

[0050] Step 1: Preparation of two-component conductive wire

[0051] Two copper wires are twisted with the two ends of a constantan wire respectively, and a layer of epoxy ester anti-corrosion insulating paint is evenly applied on the surface.

[0052] Step 2: Prepare sodium alginate aqueous solution

[0053] A certain amount of sodium alginate powder was added to deionized water and fully stirred in a water bath at 80° C. to prepare 100 mL of a sodium alginate aqueous solution with a mass concentration of 0.5%.

[0054] Step 3: Prepare calcium chloride solution

[0055] A certain amount of calcium chloride particles was added to deionized water and stirred evenly at room temperature to prepare 100 mL of a 2% calcium chloride solution.

[0056] Step 4: Preparation of polymer mixed solution

[0057] A certain amount of aniline and ammonium persulfate were successively added into a 1 mol / L hydrochloric acid aqueous solution as a solvent, and stirred evenly to obtain a polymerization solution of 0.2 mol / L aniline and 0.2 mol / L ammonium persulfate.

[0058] Step 5: Preparation of an angle-controlled (0°) interface evaporator for water and power cogeneration

[0059] First, the surface of the two-component conductive wire of copper wire and constantan wire is coated with ramie yarn, and then the yarn is immersed in the above-mentioned sodium alginate aqueous solution for ultrasonic treatment for 1 hour, and then immersed in the calcium chloride solution for 6 hours. After taking it out, the yarn is dried at room temperature to form a layer of sodium alginate hydrogel film on its surface. Secondly, the yarn is immersed in the polymerization mixed solution for low temperature (-5°C) polymerization for 10 hours. After the polymerization is completed, it is washed with deionized water and dried in an oven at 80°C. The surface of the yarn is loaded with polyaniline particles. Finally, multiple yarns are fixed through polystyrene foam to keep the yarn vertical (schematic diagram Figure 3 ∠A≈90°), and an angle-controllable (0°) interface evaporator for water and power cogeneration is obtained.

[0060] Comparative Example 2

[0061] This embodiment prepares an angle-controllable (90°) interface evaporator for water and power cogeneration according to the following steps;

[0062] Step 1: Preparation of two-component conductive wire

[0063] Two copper wires are twisted with the two ends of a constantan wire respectively, and a layer of epoxy ester anti-corrosion insulating paint is evenly applied on the surface.

[0064] Step 2: Prepare sodium alginate aqueous solution

[0065] A certain amount of sodium alginate powder was added to deionized water and fully stirred in a water bath at 80° C. to prepare 100 mL of a sodium alginate aqueous solution with a mass concentration of 0.5%.

[0066] Step 3: Prepare calcium chloride solution

[0067] A certain amount of calcium chloride particles was added to deionized water and stirred evenly at room temperature to prepare 100 mL of a 2% calcium chloride solution.

[0068] Step 4: Preparation of polymer mixed solution

[0069] A certain amount of aniline and ammonium persulfate were successively added into a 1 mol / L hydrochloric acid aqueous solution as a solvent, and stirred evenly to obtain a polymerization solution of 0.2 mol / L aniline and 0.2 mol / L ammonium persulfate.

[0070] Step 5: Prepare an angle-controllable (90°) interface evaporator for water and power cogeneration

[0071] First, the surface of the two-component conductive wire of copper wire and constantan wire is coated with ramie yarn. Then the yarn is immersed in the above-mentioned sodium alginate aqueous solution for ultrasonic treatment for 1 hour, and then immersed in the calcium chloride solution for 6 hours. After taking it out, the yarn is dried at room temperature to form a layer of sodium alginate hydrogel film on its surface. Secondly, the yarn is immersed in the polymerization mixed solution for low temperature (-5°C) polymerization for 10 hours. After the polymerization is completed, it is washed with deionized water and dried in an oven at 80°C. Polyaniline particles are loaded on the surface of the yarn. Finally, multiple yarns are passed through polystyrene foam to fix them, and the yarns are bent to 90° (schematic diagram Figure 3 ∠A≈0°), and an angle-controllable (90°) interface evaporator for water and power cogeneration is obtained.

[0072] See also Figure 1 , Figure 1 This is a schematic diagram of a single yarn of an angle-controlled interface evaporator for cogeneration of water and power prepared in Example 1. As shown in the figure, the cogeneration evaporator mainly consists of two copper wires in the core layer, one constantan wire and ramie yarn in the outer sheath layer.

[0073] See also Figure 2 , Figure 2 This is a physical picture of a single yarn of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1.

[0074] See also Figure 3 , Figure 3 This is a schematic diagram of an angle-controlled interface evaporator for water and power cogeneration prepared in Example 1. As shown in the figure, the prepared water and power cogeneration evaporator is mainly composed of copper wire, constantan wire, ramie yarn and polystyrene foam, and the bending angle A in the figure ranges from 0 to 90°.

[0075] See also Figure 4 , Figure 4 This is a diagram of multiple yarns connected in series for an angle-controllable interface evaporator for water and power cogeneration prepared in Example 1. As shown in the figure, an evaporator composed of multiple yarns can be obtained by connecting the ends of single yarns in sequence.

[0076] See also Figure 5 , Figure 5The surface morphology of the evaporator for hydropower cogeneration prepared in Example 1, Comparative Example 1 and Comparative Example 2 is shown in the figure. As shown in the figure, the sodium alginate hydrogel film and the polyaniline particles have been successfully loaded on the yarn surface.

[0077] See also Figure 6 , Figure 6 An angle-controllable (45°) interface evaporator for cogeneration of water and power prepared in Example 1 is shown. The surface temperature variation curve of the evaporator composed of different numbers of yarns under standard light intensity. It can be seen from the figure that within a certain range, the equilibrium temperature of the evaporator surface increases with the increase in the number of yarns, and the surface equilibrium temperature is the highest when the number of yarns is 48 and 64, and both are 62°C.

[0078] See also Figure 7 , Figure 7 The surface temperature variation curves of the evaporators prepared at different angles under standard light intensity in Example 1, Comparative Example 1 and Comparative Example 2 are shown in the figure. As shown in the figure, the evaporator at an angle of 45° has the best light collection effect, and the surface equilibrium temperature can reach 62°C, which has good photothermal performance.

[0079] See also Figure 8 , Figure 8 The water evaporation rate diagram of the evaporators with different angles prepared in Example 1, Comparative Example 1 and Comparative Example 2 under standard light intensity. As shown in the figure, the evaporator with a 45° angle has the best water evaporation performance. The angle-controlled (45°) interface evaporator for water and power cogeneration prepared in Example 1 can achieve an evaporation capacity of 1.77 kg m in one hour. -2 , with good evaporation rate.

[0080] See also Fig. 9 , Fig. 9 This is an evaporation diagram of an angle-controllable (45°) interface evaporator for cogeneration of water and power prepared in Example 1, which is continuously illuminated for 10 hours in 3.5% NaCl brine under standard light intensity. After a long period of light evaporation, no salt crystallization occurs on the surface and sides of the evaporator, indicating that the salt particles are dissolved back into the water during the evaporation process and are not accumulated in the evaporation layer, thus avoiding the reduction of evaporation efficiency due to blockage of the evaporation channel, indicating that the evaporator has good salt resistance.

[0081] See also Fig.10 , Fig.10 The thermal conductivity of the evaporator for hydropower cogeneration prepared in Example 1, Comparative Example 1 and Comparative Example 2 is good. The yarn wrapped with sodium alginate hydrogel film and polyaniline particles has good thermal conductivity, with a thermal conductivity of 0.18 W / mK and a thermal diffusion rate of more than 5 mm 2 / s.

[0082] See also Fig.11 , Fig.11This is a test diagram of the power generation voltage performance of an angle-controllable (45°) interface evaporator for cogeneration of water and power prepared in Example 1. As shown in the figure, the upper end of the angle-controllable (45°) interface evaporator for cogeneration of water and power heats up under sunlight, while the lower end heats up very little when immersed in water, thereby generating a temperature difference. The power generation voltage is 17.45mV, indicating that the angle-controllable interface evaporator for cogeneration of water and power has good temperature difference power generation performance.

[0083] It should be noted that the above embodiments and comparative examples are only used to illustrate the technical solutions of the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. An angle-controlled interface evaporator for water and power cogeneration and a preparation method thereof, characterized in that: The method comprises the following steps: twisting and twisting two copper wires and two ends of a constantan wire respectively, and brushing epoxy ester anti-corrosion insulating paint, coating the conductive wire with ramie yarn after drying and curing, immersing the yarn in a sodium alginate aqueous solution stirred in a high-temperature water bath by a dipping method, taking it out and then putting it in a calcium chloride aqueous solution stirred at room temperature to coat the surface of the yarn with a sodium alginate film, and finally immersing it in a mixed solution composed of hydrochloric acid aqueous solution, aniline and ammonium persulfate, and depositing polyaniline particles on the surface of the yarn by a chemical oxidation polymerization method to obtain an angle-controlled interface evaporator for water and power cogeneration.

2. The angle-controlled interface evaporator for water and power cogeneration and the preparation method thereof according to claim 1, characterized in that: The diameters of the copper wire and constantan wire are 0.1-0.5 mm, the total length of the two copper wires and the twisted ends of the constantan wire is less than the total length of the constantan wire, and epoxy ester anti-corrosion insulating paint is applied to the twisted and torsion parts of the entire constantan wire, the copper wire and the constantan wire, and then placed in an oven for drying and curing at a temperature of 60-150°C for 0.5-3 hours.

3. The angle-controlled interface evaporator for water and power cogeneration and the preparation method thereof according to claim 1, characterized in that: The mass concentration of sodium alginate in the sodium alginate aqueous solution is 0.25%-2%, and the water bath stirring temperature is 60-100°C; the diameter of the ramie yarn is 0.6-1.5mm, and the yarn is immersed in the sodium alginate aqueous solution for treatment by normal temperature ultrasound for 0.5-4h.

4. The angle-controlled interface evaporator for water and power cogeneration and the preparation method thereof according to claim 1, characterized in that: The mass concentration of calcium chloride in the calcium chloride aqueous solution is 1-15%; the yarn is immersed in the calcium chloride aqueous solution and left to stand at room temperature for 6-12 hours.

5. The angle-controlled interface evaporator for water and power cogeneration and the preparation method thereof according to claim 1, characterized in that: The mixed solution composed of the hydrochloric acid aqueous solution, aniline and ammonium persulfate has a molar concentration of 1 mol / L of the solvent hydrochloric acid, a molar concentration of 0.1-0.5 mol / L of aniline and ammonium persulfate, and a molar ratio of aniline to ammonium persulfate of 1:1; the polymerization temperature is -10-0°C, and the polymerization time is 6-12 hours.

6. The angle-controlled interface evaporator for water and power cogeneration and the preparation method thereof according to claim 1, characterized in that: The bending angle range of the evaporator is 0-90°.

7. An angle-controlled interface evaporator for water and power cogeneration prepared by the preparation method according to any one of claims 1 to 6, characterized in that: It is specifically used in the fields of hydropower cogeneration, interface evaporation fresh water collection and temperature difference power generation.

Images